siege battles crash crashes

[Derp45]

Operating system: Windows 10
Kingdom version: 1.5
SS version: 6.4
I also installed the bug fixes for SS 6.4 (http://tinyurl.com/qgozbtm)
Using steam to play it

I have an English campaign at turn 458 and whenever I go into a siege battle it always crashes. It also crashes when I try defending a siege on a custom battle. It sometimes gives me the message message:

Spoiler Alert, click show to read: 

unhandled win32 exception occurred in medieval2.exe (5856)

It does come up on visual studios giving me the option to fix it. However, Stainless Steel gets in the way so I can access it. I don't know what I can do to deal with it.

[Riva]

Did you disable the UAC (User Account Control) in Windows ? if yes, please post your SS log.

[Derp45]

Here you go

Spoiler Alert, click show to read: 

12:29:06.166 [system.rpt] [always] CPU: SSE2
12:29:06.166 [system.rpt] [always] ==== system log start, build date: Sep 5 2014 version development ===
12:29:06.182 [system.io] [always] mounted pack packs/data_0.pack
12:29:06.213 [system.io] [always] mounted pack packs/data_1.pack
12:29:06.213 [system.io] [always] mounted pack packs/data_2.pack
12:29:06.213 [system.io] [always] mounted pack packs/data_3.pack
12:29:06.213 [system.io] [always] mounted pack packs/data_4.pack
12:29:06.244 [system.io] [always] mounted pack packs/localized.pack
12:30:23.308 [game.script] [always] Germanicu5 ReallyBadAI v5.7 Running. Please upload log and savegames when reporting battle CTDs for SS.
12:35:00.527 [system.rpt] [error] Medieval 2: Total War encountered an unspecified error and will now exit.

[Riva]

This seems not like an scripting issue, you can try this guide (LAA step):

http://www.twcenter.net/forums/showt...1#post13140030

Otherwise this might be related to steam, there are lots of hints in this forum how to do a prober install in this case.